[Wayland-bugs] [Bug 91369] Libinput 0.19 and 0.20 ignore POINTINGSTICK_CONST_ACCEL

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91369

--- Comment #18 from Peter Hutterer <peter.hutterer at who-t.net> ---
Created attachment 117471
  --> https://bugs.freedesktop.org/attachment.cgi?id=117471&action=edit
rendering of the acceleration function

this is your acceleration function in comparison to the linear one. For a
1000dpi trackpoint (i.e. one without a CONST_ACCEL, the function is identical
to the linear one). For a low-dpi one, here a 400dpi one (const accel 2.5) the
low-speed profile is the same but it accelerates faster and higher once it hits
the threshold.

Interesting approach, I notice however that the pointer is still very hard to
control, especially once I put any serious pressure down (e.g. when I want to
cross the screen), the pointer immediately shoots off way too fast. I think my
main problem is the threshold, I wonder if a more linear approach would work
better.

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